轴近中的

In this paper, we have briefly introduced near-axis properties of passive axisymmetrical eiectrostatic field in vacuum,have presented the basis of dvawing equipotential line and have simultaneously given specific method procedure and example, Finaly, the function of quatitative analysis in the electron-optical systems have been pointed out.

文中简要地介绍了真空中无源轴对称静电场的近轴性质，提出了描绘等位线的依据，给出了具体方法、步骤与实例，指出了其在电子光学系统定性分析中的作用。

This paper calculates the magnetic field distribution of short coil, The electronic in magnetic field movement under the near axis condition is discussed.

本文计算了短线圈内的磁场分布，讨论了近轴条件下电子在磁场中的运动，根据光学焦距的定义，推导出了磁透镜的焦距公式。

Taking stray light in "Shenguang III" as the study subject and basing on the basic principle of geometrical optics,Applying the technological path of paraxial ray and real ray tracing,a new analytic way and data structure,which suits for the specific requirement in analysis and process of ghost images,is presented.

本课题就是以"神光-Ⅲ"激光装置中的杂散光为研究对象，针对高功率多程放大系统在鬼像分析与处理方面特殊要求，从光线光学的基本原理出发，应用近轴光线与空间光线追迹技术路线，提出一种新型的分析方法和数据结构。

All backscattering field s intensity from conducting plate can be calculated by complex ray method ,especially complex ray paraxial approximation in angle domain through modeling the conducting plate.

本文通过建立导电平板反射场分析模型，利用复射线方法特别是角域中的复射线近轴近似方法，有效地实现了导电平板在整个后向范围内散射场的计算，同时计算精度可以由复射线展开参数ξ来加以控制。

It is about equivalent to the later period of Xizhou Dynasty and in the middle-later period of Chunqiu Dynasty in era, the former is larger in scale, with the long axis direction of crack of sand parallel to the direction of the seismic fracture in the near side.

发生时代约相当于西周晚期和春秋中晚期，前者规模较大，含砂裂缝长轴方向平行于近侧的地震活动断裂方向。

The major auriferous veins of Jizhao gold deposit occur in the compressive break belt of aft EW-extending fold axis.The host rocks are sillimanite biothe-schist and dimicaceous schist of the second Member,Dashiqiao Formation.

鸡爪金矿主要金矿脉赋存在近东西向的褶皱轴部的挤压破碎带中，容矿岩石为大石桥组二段矽线黑云片岩、二云片岩，围岩蚀变为硅化、钾长石化、黄铁矿化。

Based on the Collins integral formula, the propagation of generalized hypergeometric beams in paraxial ABCD optical systems is studied and the analytical expressions for complex amplitude at output plane are obtained.

利用柯林积分公式研究了广义超几何光束在ABCD近轴光学系统中的传播行为，得到了光束在输出平面复振幅的解析表达式。

Results maxillary first and second molars were more mesially inclined in the first group, particularly in the younger subjects (16～25 years). this inclination increased with age. the logistic regression showed that the sagittal inclination of the first molar is a predictor of the eruption of the third molar.

结果 上颌第三磨牙萌出组与未萌出组相比，上颌第一磨牙和第二磨牙更向近中倾斜，而且随年龄的增加倾斜度也变大。logistic回归结果显示第一磨牙的轴倾度是第三磨牙萌出的一个预测因子。

In order to reduce the effect of probe errors in near-field antenna measurement, the solutions are proposed as follows: On the one hand, theoretical formula of probe-compensated is derived; on the other hand, drop-shaped probe is designed and near-zone gain, far-field patterns, axial ratio, main lobe width, input impedance, voltage standing-wave ratio, electromagnetic field and current distribution of probe are obtained through the computer simulation.

针对近场测量中的重要误差源之一&探头&的影响，本文提出解决方法：一方面用探头补偿的方法，根据洛仑兹互易定理和微波网络理论对补偿的解析式进行详细推导；另一方面用两种不同的仿真软件求解终端开口矩形波导探头的近场增益、远场方向图、轴比、主瓣宽度、输入阻抗、电压驻波比、电场分布、磁场分布、表面电流分布等特性参数，可实现探头增益的修正。

Flounder FoxD1 mRNA was over expressed in one cell of the two-cell stage zebrafish, MyoD expression in the somites on one side was reduced, but the expression in the adaxial cells was not affected; Myf5 expression in the presomitic mesoderm, adaxial cells and somites on one side was reduced.

在斑马鱼中过量表达FoxD1后，MyoD在一侧体节中的表达受到了严重抑制，而在近轴细胞中的表达未受影响，Myf5在体节前中胚层，近轴细胞，及体节中的表达都受到了抑制。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。